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| author |   Mike Leach <mike.leach@linaro.org> | 2020-09-16 13:17:37 -0600 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-17 18:46:05 +0200 |
| commit | 14ea4db18c069816e7ff0441a2f39a12d2feb11c (patch) | |
| tree | e58606c8abf3bcaf9048c14ffa0fd4aad83ae987 /drivers/hwtracing/coresight/coresight-etm4x.h | |
| parent | coresight: etm4x: Fix mis-usage of nr_resource in sysfs interface (diff) | |
| download | linux-dev-14ea4db18c069816e7ff0441a2f39a12d2feb11c.tar.xz linux-dev-14ea4db18c069816e7ff0441a2f39a12d2feb11c.zip | |
coresight: etm4x: Fix number of resources check for ETM 4.3 and above
The initialisation code checks TRCIDR4 to determine the number of resource
selectors available on the system. Since ETM v 4.3, the value 0 has a
different meaning. This patch takes into account this change.
Signed-off-by: Mike Leach <mike.leach@linaro.org>
[Removed '.' in patch title, added stable]
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20200916191737.4001561-17-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-etm4x.h')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-etm4x.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.h b/drivers/hwtracing/coresight/coresight-etm4x.h index 5259f96fd28a..eefc7371c6c4 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.h +++ b/drivers/hwtracing/coresight/coresight-etm4x.h @@ -200,6 +200,9 @@ /* NS MON (EL3) mode never implemented */ #define ETM_EXLEVEL_NS_VICTLR_MASK GENMASK(22, 20) +/* Interpretation of resource numbers change at ETM v4.3 architecture */ +#define ETM4X_ARCH_4V3 0x43 + /** * struct etmv4_config - configuration information related to an ETMv4 * @mode: Controls various modes supported by this ETM. |